1 . Though ________ (frighten), the girl appeared calm. (所给词的适当形式填空)

2 . I’m totally ________ (困惑的). Could you explain that again? (根据汉语提示单词拼写)

3 . It is nearly certain though it is not _________(官方的) news.

4 . He is r__________. He can do his work very well and you can trust him.

5 . The __________ (平均的) age of the boys in this class is fifteen. (根据汉语提示单词拼写)

6 . __________(上瘾的) to alcohol, he feels sleepy all day long.

7 . This heating system has an __________(自动的) temperature control.

8 . It is predicted that the economy will have a ___________(稳定的) rise.

9 . An __________(适当的) method must be found to deal with such situation.

10 . The students accomplished the __________ （具有挑战性的） task in less than 10 minutes, which surprised us all.